122111002221 has 16 divisors (see below), whose sum is σ = 176376392640. Its totient is φ = 75145228080.

The previous prime is 122111002217. The next prime is 122111002271. The reversal of 122111002221 is 122200111221.

It is not a de Polignac number, because 122111002221 - 2² = 122111002217 is a prime.

It is a super-2 number, since 2×122111002221² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 122111002221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122111002271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9256875 + ... + 9270056.

It is an arithmetic number, because the mean of its divisors is an integer number (11023524540).

Almost surely, 2^122111002221 is an apocalyptic number.

It is an amenable number.

122111002221 is a deficient number, since it is larger than the sum of its proper divisors (54265390419).

122111002221 is an equidigital number, since it uses as much as digits as its factorization.

122111002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18526973 (or 18526947 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 122111002221 its reverse (122200111221), we get a palindrome (244311113442).

The spelling of 122111002221 in words is "one hundred twenty-two billion, one hundred eleven million, two thousand, two hundred twenty-one".